Cold Email Outreach APIs
22 verified tools with cold email outreach capabilities. Compare MCP support, pricing, and API specs side-by-side.
Spec Comparison
MCP readiness, free tiers, API types, and auth methods for all Cold Email Outreach tools.
| Tool | MCP | Free Tier | API | Auth | Pricing |
|---|---|---|---|---|---|
| Revenue OS | REST | API Key | — | ||
| Grinfi | REST | Bearer Token | View | ||
| Agentforce SDR | REST | OAuth2 | View | ||
| Acuity | REST | API Key | View | ||
| coldr | — | ||||
| Genesy | REST | API Key | View | ||
| GetSales.io | REST | API Key | View | ||
| GMass | REST | API Key | View | ||
| Instantly.ai | REST | API Key | View | ||
| Jason AI | REST | API Key | View | ||
| Lightfield | REST | API Key | View | ||
| Mailshake | REST | API Key | View | ||
| Prosp | REST | API Key | View | ||
| ReachInbox | REST | API Key | View | ||
| ReachKit | REST | API Key | View | ||
| Replyify | REST | OAuth2 | View | ||
| RevReply | REST | Bearer Token | View | ||
| SalesBlink | REST | API Key | View | ||
| SalesMonk | REST | API Key | View | ||
| Salestools AI SDR | REST | API Key | View |
Showing 20 of 22 tools. Use the filter below to narrow down.
Data from tool definitions. Pricing links go to official pages.
Quick Picks
Best Free Tier
Open-source AI prospecting agent — a self-hostable alternative to HubSpot Prospecting Agent, Artisan, and 11x.
Best Webhooks
Open-source AI prospecting agent — a self-hostable alternative to HubSpot Prospecting Agent, Artisan, and 11x.
All 22 Tools
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Open-source AI prospecting agent — a self-hostable alternative to HubSpot Prospecting Agent, Artisan, and 11x.
All-in-one LinkedIn and email outreach platform with REST API for automations and messaging.
Salesforce's AI-driven platform for building autonomous sales agents.
AI-powered sales development and prospecting services.
Run, preview, and ship cold email campaigns straight from your terminal.
AI-powered lead generation and sales automation platform.
Public API for automating LinkedIn outreach and contact management.
Powerful mail merge and cold email system for Gmail.
The gold standard for cold email infrastructure and automation.
AI-powered SDR by Reply.io for automating entire sales outreach process.
AI sales assistant for personalized outreach and high-engagement lead gen.
Cold email outreach platform used by 38,000+ sales professionals.
AI sales assistant for personalized prospecting and LinkedIn outreach.
AI-powered cold email platform with warmup and automation.
Cold email outreach platform with unlimited warmup.
Automated personalized cold emails and follow-ups.
AI-powered email outreach with calendar booking.
Full-stack cold outreach automation platform for sales teams.
AI-powered SDRs combining human expertise with AI technology for revenue scaling.
Autonomous AI SDR agents that research, personalize, and book meetings across email and LinkedIn.
Cold email outreach and lead enrichment platform for sales teams.
Cold email outreach and follow-up automation for sales and agencies.
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